A body of mass 6kg is under a force which causes displacement in it given by S=t24 metres where t is time. The work done by the force in 2 seconds is

see full answer

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!

An Intiative by Sri Chaitanya

12 J

9 J

6 J

3 J

answer is D.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

s=t24 ∴ds=t2dtF=ma=md2sdt2=6d2dt2t24 = 3NNowW=∫02F ds=∫023t2dt=32t2202=34(2)2−(0)2=3J

Watch 3-min video & get full concept clarity